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Porous layered graphene frame material as well as preparation method and application thereof

A framework material and graphene technology, applied in the field of materials, can solve the problems of wide pore size distribution, poor pore arrangement regularity, and large pore size.

Active Publication Date: 2018-11-06
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a porous layered graphene framework material for the problems of large pore size, wide pore size distribution, and poor channel arrangement in existing graphene porous materials.

Method used

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  • Porous layered graphene frame material as well as preparation method and application thereof
  • Porous layered graphene frame material as well as preparation method and application thereof
  • Porous layered graphene frame material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) Add 100 mg of diaminopolyetheramine with a molecular weight of 2000 g / mol to 50 ml of an aqueous suspension of graphene oxide three-dimensional structure with a concentration of 1 mg / ml, mix well and react under heating conditions at 50°C 10 hours gave a mixture.

[0029] (2) The mixture obtained in step (1) is centrifuged and washed several times to remove unreacted polyetheramine, and obtain a wet state porous layered graphene framework material.

[0030] (3) Freeze-drying the wet state porous layered graphene framework material obtained in step (2) to obtain a dry state porous layered graphene framework material.

Embodiment 2

[0032] (1) Add 100 mg of bisaminopolyetheramine with a molecular weight of 600 g / mol to 50 ml of an aqueous suspension of graphene oxide three-dimensional structure with a concentration of 1 mg / ml, mix well and react under heating conditions at 70°C 10 hours gave a mixture.

[0033] (2) The mixture obtained in step (1) is subjected to vacuum filtration-water washing several times to remove unreacted polyetheramine, and obtain a wet-state porous layered graphene framework material.

[0034] (3) Naturally drying the wet state porous layered graphene framework material obtained in step (2) to obtain a dry state porous layered graphene framework material.

Embodiment 3

[0036] (1) Add 100 mg of bisaminopolyetheramine with a molecular weight of 2000 g / mol to 50 ml of an aqueous suspension of graphene oxide three-dimensional structure with a concentration of 1 mg / ml, mix well and react under heating conditions at 100°C 2 hours to give a mixture.

[0037] (2) The mixture obtained in step (1) is centrifuged and washed with ethanol several times to remove unreacted polyetheramine, and obtain a wet state porous layered graphene framework material.

[0038] (3) Freeze-drying the wet state porous layered graphene framework material obtained in step (2) to obtain a dry state porous layered graphene framework material.

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Abstract

The invention relates to a porous layered graphene frame material as well as a preparation method and application thereof. The method comprises the following steps of performing reaction on a grapheneoxide three-dimensional structure body and diamino polyether amine for a certain time at a certain temperature, removing unreacted polyether amine with filtering-washing, and performing drying to obtain the porous layered graphene frame material. Compared with prior art, the method is low in price of involved raw materials, moderate in reaction condition and simple in technology. The obtained porous layered graphene frame material has homogeneous and controllable microporous / mesoporous pore channels and can be used for multiple fields of biological detection, chemocatalysis, electrochemical energy storage, gas storage and gas separation, wastewater treatment, environment protection and the like.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a porous layered graphene frame material and a preparation method thereof. Specifically, adding bisamino polyether amine to the three-dimensional structure of graphene oxide, reacting at a certain temperature for a certain period of time, removing unreacted polyether amine by filtration-washing to obtain a wet state porous layered graphene framework material, which is obtained after drying Dry state porous layered graphene framework material. Background technique [0002] Porous materials are a class of materials that form a network structure of interpenetrating or closed pores. Due to the special porous structure, porous materials usually have the characteristics of high specific surface area, high porosity, high permeability, high adsorption, assembleability, controllable pore size and structural diversity. This makes porous materials widely used in many fields such as cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184C01B32/194
CPCC01P2002/88C01P2004/03C01B32/184C01B32/194
Inventor 卢红斌阮英波张佳佳
Owner FUDAN UNIV
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